Unburned Hydrocarbon Emissions from Natural Gas Engines.

The combustion of natural gas in engines is studied theoretically and practically. Combustion phenomena's like flame propagation, flame extinction, wall quenching and post oxidation are described mathematically and verified experimentally in combustion bombs and engines. The fuels applied are mixtures of natural gas, hydrogen and other gases. The effect of adding a small amount of hydrogen to natural gas on the emission of unburned methane is of special importance to the project.